Telegraphic Cipher Code: Gerrish System
Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.
Publisher The Observatory
Possible copyright status NOT_IN_COPYRIGHT
Digitizing sponsor Google
Book from the collections of Harvard University
Notes "The system and code were devised by Mr. Willard P. Gerrish, of this Observatory, who has prepared the following description and instructions." -- Pref.